In astrology

Astrology

Astrology consists of a number of belief systems which hold that there is a relationship between astronomical phenomena and events in the human world...

, astro-twins are a pair of people that were born on the same day and whose natal chart

Natal chart

In astrology, a natal chart is a stylized map of the universe with the "native" at the center. It is calculated for the exact time and location of the native's birth for the purposes of gaining insight into the native's personality and potential...

/horoscope

Horoscope

In astrology, a horoscope is a chart or diagram representing the positions of the Sun, Moon, planets, the astrological aspects, and sensitive angles at the time of an event, such as the moment of a person's birth. The word horoscope is derived from Greek words meaning "a look at the hours" In...

 is consequently very similar, even though they may have been born in different places and at different times. The British journalist Tony Barrell

Tony Barrell (journalist)

Tony Barrell is a British journalist, known for his humour and his exploration of the unusual and the unexplained. He has written many major features for the Sunday Times, and has also contributed to The Times, The Idler, and Cornucopia magazine, among others. He frequently writes about people with...

 is a compiler of astro-twins, and contributed a column to The Sunday Times (UK)

The Sunday Times (UK)

The Sunday Times is a Sunday broadsheet newspaper, distributed in the United Kingdom. The Sunday Times is published by Times Newspapers Ltd, a subsidiary of News International, which is in turn owned by News Corporation. Times Newspapers also owns The Times, but the two papers were founded...

 from 2005 to 2006 called Born On The Same Day, which compared and contrasted the lives of famous people with exactly the same birth date – such as Michael Jackson

Michael Jackson

Michael Joseph Jackson was an American recording artist, entertainer, and businessman. Referred to as the King of Pop, or by his initials MJ, Jackson is recognized as the most successful entertainer of all time by Guinness World Records...

 and Lenny Henry

Lenny Henry

Lenworth George "Lenny" Henry, is a British actor, writer, comedian and occasional television presenter.- Early life :...

, Charles Darwin

Charles Darwin

Charles Robert Darwin FRS was an English naturalist. He established that all species of life have descended over time from common ancestry, and proposed the scientific theory that this branching pattern of evolution resulted from a process that he called natural selection.He published his theory...

 and Abraham Lincoln

Abraham Lincoln

Abraham Lincoln was the 16th President of the United States, serving from March 1861 until his assassination in April 1865. He successfully led his country through a great constitutional, military and moral crisis – the American Civil War – preserving the Union, while ending slavery, and...

, Margaret Thatcher

Margaret Thatcher

Margaret Hilda Thatcher, Baroness Thatcher, was Prime Minister of the United Kingdom from 1979 to 1990...

 and Lenny Bruce

Lenny Bruce

Leonard Alfred Schneider , better known by the stage name Lenny Bruce, was a Jewish-American comedian, social critic and satirist...

, Sir Derek Jacobi

Derek Jacobi

Sir Derek George Jacobi, CBE is an English actor and film director.A "forceful, commanding stage presence", Jacobi has enjoyed a highly successful stage career, appearing in such stage productions as Hamlet, Uncle Vanya, and Oedipus the King. He received a Tony Award for his performance in...

 and Christopher Lloyd

Christopher Lloyd

Christopher Allen Lloyd is an American actor. He is best known for playing Emmett Brown in the Back to the Future trilogy, Uncle Fester in The Addams Family and Addams Family Values, and Judge Doom in Who Framed Roger Rabbit. He played Reverend Jim Ignatowski in the television series Taxi and more...

, Bill Oddie

Bill Oddie

William "Bill" Edgar Oddie OBE is an English author, actor, comedian, artist, naturalist and musician, who became famous as one of The Goodies....

 and Michael Howard

Michael Howard

Michael Howard, Baron Howard of Lympne, CH, QC, PC is a British politician, who served as the Leader of the Conservative Party and Leader of the Opposition from November 2003 to December 2005...

, and Laura Bush

Laura Bush

Laura Lane Welch Bush is the wife of the 43rd President of the United States, George W. Bush. She was the First Lady of the United States from January 20, 2001, to January 20, 2009. She has held a love of books and reading since childhood and her life and education have reflected that interest...

 and Robert Mapplethorpe

Robert Mapplethorpe

Robert Mapplethorpe was an American photographer, known for his large-scale, highly stylized black and white portraits, photos of flowers and nude men...

.

Another definition of "astro-twin" posits that an individual is the astro-twin of another person when they share that person's sun

Sun

The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields...

, moon

Moon

The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...

, and ascendant

Ascendant

The ascendant , or rising sign, is the zodiacal sign and degree that was ascending on the eastern horizon at the specific time and location of an event. According to astrological theory, celestial phenomena reflect or determine human activity on the principle of 'as above so below'...

, even if they weren't born on the same day.